Same here, before 2 or 3 updates everthing was fine no lags, no connection or mapchange issues, but since the updates this really get my nerves. Stuck lodingsceen and stuff...
I have a very decent machine, and Im sure its not my hardware or connection:
Operating System: Windows 7 x64 Ultimate
Processors: Intel QuadCore i7 940 @ 3,8 GHz
Mainboard: ASUS P6T Deluxe X58
Memory: 6 GB Corsair DDR3 1600 XMS3 CL8 Dominator
Graphics Card: eVGA e-GeForce GTX 280 SSC 1024MB
Soundcard: Creative SB X-Fi XtremeGamer
Harddisc: 128 GB SSD 2,5 Corsair P128 GB2D
Network: DSL 18000/1000 + FP
As I told before, never had a problem "before" the updates which should fix the issues above, but after that I sadly have them now.
My problems with the game started with the 29th october update, and its getting worse with the 19th november update. Even my clan mates with the weak hardware have no problems before the "memory usage reduction" but now they need to restart the game at any mapchange.
Tried all of the fixes from the forum, but no luck.