For quite a while, I have been facing this issue.
Whenever, I open a code file - like this from an open-source project - https://github.com/dusty-nv/jetson-reinforcement/blob/master/gazebo/ArmPlugin.cpp, the website starts to lag and slows down immensely. I can’t effectively scroll down or do anything. Happens with this one too for example - https://github.com/sahiljuneja/Udacity-Deep-Learning-ND/blob/master/P3-Tv-Script-Generation/problem_unittests.py
This issue hasn’t presented itself on Firefox. I am not sure how to diagnose this, so thought of posting here before contacting support directly.
I tried disabling all extensions on Chrome for github.com and the problem persists. I am not sure if this is relevant, but I also have had issues with lightboxes not loading up properly on Chrome for quite a long time.