mouse Lag

[ortollj]

Hi
Ubuntu 18.04.4 LTS , FireFox 78.0.2 , SageMath Jupyter notebook 9.1
When I use my pc with SageMath, after a while I observe a high response time with my mouse. I then look at what is happening with the system monitor, and I see that the memory is occupied at around 90% and that the swap memory is occupied at around 35%. If I quit Sagemath (I meant that I kill the terminal window in which I launched SageMat without & I precise) and I close all Firefox windows, then the memory occupation goes down to around 60% and the swap memory goes down to around 25%. But when I look with HTOP, I notice that it is still running several Sagemath processes. I'll give it a try with Chrome, to see if it's browser independent. The problem is not specific to a certain SageMath code, I notice it with different SageMath codes.
see the system monitor image capture on. As i do not know if the problem is with Ubuntu or SageMath I posted also on SageMath site. I noticed several times that once swap memory is taken, it is never released completely even if the memory comes back to low level.
https://ask.sagemath.org/question/52707/mouse-lag-after-a-while/

(https://ask.sagemath.org/question/52707/mouse-lag-after-a-while/)

[ActionParsnip]

Sounds very specific to sagemath. The forum you have posted in will help more than here, most likely. Is there a bug report logging system for the application?
Does the binary used to launch the application have any switches you can play with or a conf file you can alter?

[ortollj]

you're right, apparently it would come from the way i use Sagemath through Jupyter notebook. look at the answer to my post on the SageMath site given in my first post.