Hi, I think you should start a new thread with an appropriate title, quoting your current exact build number and listing the tests that now pass on your PC.

Asking someone to read back through two other threads now is asking a lot - a summary would save people valuable time.

a. Freezing- no logs, so very hard to diagnose. I'm not expert on that- others may have more ideas- people who've worked in PC repair places etc.

Basics: separate hardware from software.

Attempt to try to eliminate things e.g. eliminate your installed build entirely and run tests from a live boot disk.
If no failure for 'long enough' given a variety of stress conditions, then suspect your installed O/S and software.

Boot your PC - try a clean boot - see if any freezes.

I suggest you need to resolve freezing first as it affects everything.

Latency issues need expert help with diagnosis using the Windows Performance Analyser. It's not worth attempting that
a. given the PC could freeze
b. it's a lot of effort, with uncertain outcome, both on your part and that of the person helping you.

Perhaps you could set up in business offering your magic touch for hire?