Okay! May I know your computer specs for the download and your web browser for the web versions? :) And does this only happen during saves?
Using chrome, the crashes were much less frequent once I restarted my potato laptop.
Processor Intel(R) Core(TM) i5-7200U CPU @ 2.50GHz, 2712 Mhz, 2 Core(s), 4 Logical Processor(s)
Happens more frequently before the loading screens and cgs, but also sometimes crashes out of nowhere