Pokerstars freezing when opening the replayer

Hi,

Ive experienced this problem for the past months. When clicking the replayer, sometimes all the tables will freeze for about 20-30 seconds(turning grey).
I could still continue as normal on my GG poker tables, while Pokerstars was frozen. 1 month ago though the freezing ended up freezing my entire computer along
with my GG poker tables and I had to restart my computer. Havent played on Pokerstars since then.

I have a friend who started experiencing the same thing when opening the replayer.(the 20-30sec freezings) Anyone know what is the issue here?
I couldnt send the "log" of events to Pokerstars, since I contacted them a bit too late and I dont really want to recreate the problem
and risk losing a chunk of money when it all crashes again.