Website Optimization Problem with newspaper theme

Does the Newspaper theme take time to fully optimize? I used the ‘W3 Total Cache plugin and the plugin created an issue at WordPress skite health with missed schedule event. Now I use the ‘WP-Optimize – Clean, Compress, Cache’ plugin but it only shows 68% performance at GTmetrix.
One thing to mention, when I used W3 Total Cache plugin, the performance was 95%. However when I first activated the plugin, the performance was not 95%, it was 66-72% on GTmetrix. After 2 days, I say suddenly the performance increased to 95%. I downloaded the ‘WP Missed Schedule (The Original)’ plugin to solve the issue and instaled it. but it refuse to get activated due to the errors as follows:
*”Before activate plugin WP Missed Schedule please delete conflicting option: byrev_fixshedule_next_verify.”
*”To avoid conflicts please clean orphaned options not cleaned after deactivation or uninstallation of plugin: ByREV Fix Missed Schedule.”
If I could active this plugin, then I could use the ‘W3 Total Cache’ plugin. But now I tried every other optimizer but the performance is below 60% at GTmetrix. I followed your articles on ‘Get almost 100% performance on GTmetrix’, but with those optimizers, the performance does not get up to 65%.

Therefore I want to know, Will the performance increase afterward or not?
Another thing is, Do you have any suggestion to use the W3 Total Cache plugin with no ‘Missed Schedue Event’ error?

Okay, but should I use this with ‘W3 Total Cache’ Plugin or without it? I am concerning about the performance of my site. Therefore I am asking. Thanks.