Saila360 on Australia servers is somewhat doable, but fights against soldiers and pyros become a lot harder. I think 400 and past is unplayable on scout
Ive played pugs based in asiafortress, ozfortress and seasons in both esea and etf2l, basically any ping below 400 is technically playable. I personally have played soldier in ozfrotress pugs with 350 ping and done fine in low level pugs. when you jump you literally have to click before you turn tho. ive also played a season of etf2l soldier on 190 ping. Again did pretty well. played mid. in NA i play with 80-90 ping and it sucks but its not as bad as 200 or something. I ascended in LAN pugs at rewind 2.
all this being said anything above 60 is aids im just willing to deal with it and keep going. really its up to you how tolerant you'll be with the disadvantage youll have.