I feel the same way. The first few days with the G4 were awful. Lag everywhere. I disabled all the apps I could from the stock Apps menu, but it was still slow. I then found a Debloat tool that can disable any app on the phone through ADB. After doing that, the phone is a whole different animal. Lag has been reduced by at least 90%. I see it very rarely now, and mostly when I have taxed the phone with heavy processing. The battery life also improved greatly. I was barely making it to 1 PM, and now it at least gets me to 5 PM. It deep sleeps much better.
I have the T-Mobile version, which usually has less bloatware, but I still ended up disabling a ton of apks, both LG and T-Mobile. Here's the list of things I disabled
	
	
	
		Code:
	
	
		AdaptClient.apk                                
AmazonMobile.apk                               
BioITPlatform_SDService.apk                    
Books.apk                                      
CloudHub.apk                                   
com.mobitv.client.tmobiletvhd.apk              
DemoStub.apk                                   
GCUV.apk                                       
LGCover.apk                                    
LGEasyHome.apk                                 
LGEIME.apk                                     
LGEIME_DICT_XT9_bin.apk                        
LGEIME_THEME_BLACK3.apk                        
LGFavoriteContactsWidget.apk                   
LGFileManager.apk                              
LGLIA.apk                                      
LGMessage.apk                                  
LGMusic.apk                                    
LGMusicShare.apk                               
LGMusicWidget.apk                              
LGMyGuide.apk                                  
LGMyPlacesEngine.apk                           
LGMyPlacesSettings.apk                         
LGPartnerBookmarksProvider.apk                 
LGPCSuite.apk                                  
LGQVoiceplus.apk                               
LGSmartSharePush.apk                           
LGSmartWorld.apk                               
LGStartupwizard.apk                            
LGUpdateCenter.apk                             
LGVidClip.apk                                  
LGVoiceCommand.apk                             
LGVoiceCommandService.apk                      
LGVoiceRecorder.apk                            
LGWeather.apk                                  
LGWeatherService.apk                           
LGWeatherTheme.apk                             
LGWernickeManager.apk                          
LIAInformant.apk                               
LIAS4URecommender.apk                          
Lookout.apk                                    
MobileMoney.apk                                
Music2.apk                                     
NameID.apk                                     
Newsstand.apk                                  
SmartSetting.apk                               
SmartShare.apk                                 
SmartShareDLNA.apk                             
SmartShareProvider.apk                         
SplitWindowService.apk                         
TMO_AppSource.apk                              
TMO_MyAccount.apk                              
TMO_Simlock.apk                                
Videos.apk                                     
Wallet.apk
	 
 
Now that the phone works better, I am still missing stock Android because LG really screwed up Lollipop. My main annoyances are:
- Having to swipe to get rid of the lock screen after tapping on a notification, when my Moto 360 is keeping it unlocked through Smart Lock
- I hate the LG lock screen (tied to above)
- Not being able to expand notifications (only the top, latest one is expandable)
- I miss my quick toggles and Lollipop menu
- I miss the stock Android battery status, LG doesn't show WiFi, Awake, Signal Level, etc
- I miss the Google Dialer (the built in search is pretty awesome)
- Quick Charge 2.0 is not as fast as the N6
I do love
- Back buttons. The best. Loved them on my G3, love them here.
- Camera. It really is LEAGUES better than the Nexus 6 in quality and speed. The app is pretty good too, better than FV-5 in usability and speed
- Size
- Leather back
- Notification LED
- Micro SD
- LCD Screen. I prefer cooler tones vs OLED's warmer ones.
The Moto X Pure is definitely tempting me. I really hope the camera performs as well as they say. It doesn't have OIS though, which is a shame because I find it to be a very useful camera feature. I had a Moto X for several months and really like Moto's non-intrusive additions to Android (Active Display works well, although in an LCD device, the battery might take a hit on the new Moto X, wave to wake is pretty useful too, but so is knock to wake).