Any repair logs should be found in C:\ Program Files\Tweaking.com\Windows Repair (All in One)\Logs
Aye put things back to normal and see how things go if you will.
Having another 8GB of RAM would enable dual channel and speed things up for you but not the answer to the high RAM usage, can you grab and upload a screenshot of Task Manager on the memory tab page so we can take a look, btw, Edge has well documented memory leak problems to it`s track record, I suggest that you disable it and stick with either Chrome or FF.