I've played many games myself in a 1v1, 2v2, 3v3, even 1 4v4 and have been lag free on my end. Maybe post your specs so we can see what might need upgrading?
The sync error for replays has been already reported.In either case, we cannot do anything about the lag because it works fine for some players and it doesn't for others, which means we wouldn't know what it causes it. Does anyone get lag when playing Skirmishes or PvP?
All pcs and laptop are (Hdd DEFRAGMENTED,checked for errors,scanned for viruses and malwares,optimized everything with auslogics,cleaned disk etc.)All on Windows 7 - 64bit.my cpu specs:1 PC : AMD Phenom II quad @ 3.5 Ghz , 8gb ram ddr3, Ati Radeon 6850 1GB, 2 PC : AMD Athlon X2 dual @ 2.2 Ghz , 3gb ram ddr2, Ati x1950 Pro 512Mb,3 Laptop: Intel Dual core @ 1.7 Ghz, 4 gb Ram ddr3, NVIDIA® GeForce® G 210M with 512MB GDDR3,Settings for game on all pc and laptop are from Medium to low, tried also everything on low.Everything worked well before the patch 1.7, after the patch it started lagging after playing the game for about 5 min, me and my brother against 2 A.I. skirmish on many maps, I tried also 1on1 skirmish against A.I. on pcs and laptop and lagging started also after 5 min of game, lag is unbearable, I cant play the game anymore cuz its frustrating, it never happened before. Please dont mention defragmenting anymore cuz its nonsense, you something messed up with the last patch, you could just admit it. try to fix it, thanks.