Play aimlab it really helps..even if you are not gonna notice immediatly that you improved the results will show you PEACE
I hit 100k once in my 60 Hz laptop. My average was around 88-90k before I stopped. It's possible to improve in 60 Hz but getting a better monitor would help a lot. I just switched to 165 Hz this week and my reactions are already noticeably faster.
Edit: Proof https://imgur.com/a/0TJCS5Z
yea i dont mean to be harsh at all but it's naive to think there's never room for improvement even when you're not in the best conditions to keep grinding your way up, is there any cap for that improvement with 60hz in comparison to 144/240? probably yes, but your 73k peak can most definitely be slightly improved with dedication
:)