I have this same too.
(I HAVE ASUS N52S - AMD processors (2 core and ATI mobility RADEON HD 5730 1GB)
TRY this:
1. use minimal graphics setting - first step
2. USE ONLY ONE CORE - not first on list
3. SET application prority to LOW (LOWEST? - i have polish version of win7...........) YES! not hig priority but LOWEST AS POSSIBLE
its all
YES
You should still have problem with not correctly drawing your and enemy ship (desync witch server) but......
NEXT STEP IS:
4. IF you just start the battle (loading screen is end, counting is end, and you can operate your ship)
5. Disable your wifi (or unplug your LAN cable - btw disconnect from internet for a one moment) to get kicked from serwer to loging lobby
6. reconnect internet (wifi, lan, etc.)
7. Log in to server again
8. After login you should be automaticly assigned to not completed mission
9. your REAL ping should be a bit better (or even normal)
TIPS
You can check your real ping watching clock to start mission
example. Time to start mission...... 12 sec, 11 sec, 10 sec, 09sec... boommm! you are in mission! <------- YOUR REAL ping is betwen 8000 - 9000 ms (8 - 9 sec)
SORRY FOR MY ENGLISH
BUT I HAVE POLISH KEYBOARD