Hi, im having a issue with my server (which i host on my computer) where it works fine for about 5 minutes then when i try to break a block, it breaks but doesnt drop anything (same with grass leaves everything even animals stand still and do nothing) it seems to only happen when i travel across the map, and it also happens when i play singleplayer. The server window says "Can't keep up! Did the system time change, or is the server overloaded?"  and on client it says timed out, on singleplayer it takes awhile then it says "shutting down internal server" then i have to kill minecraft using MutliMC:s kill button. the server has 4gb of ram allocated to it and the client has 2gb.

 

Thank you in advance for any help on the matter and excuse my bad grammar.

 

Client log

 

https://dl-web.dropbox.com/get/ForgeModLoader-client-0.log?w=AAB2p-ILPIozg51TJ2_s0d_zwDdpAtRCgFz0c_wFDa42cA

 

 

Server log

 

https://dl-web.dropbox.com/get/ForgeModLoader-server-0.log?w=AACQMoLHEkZUlxu8SnYEbZMnSEqqvVAtJ500kTwtIveyjA

As far as I know it shows up when your computer clock isn't right, but I don't think that's the problem, it happens to me when my CPU can't open a server and another program at the same time. But with 4GB of ram... Check if you're using the CPU at the 100%. If yes, that's the problem: the CPU can't hold a server (or a server and Minecraft at the same time)

when running both the server and minecraft on same computer i am using between 60-80 % CPU and 80% ram.

Seems to me that your computer just cant handle running both the client and server in your current configuration.

Not a forge issue.