Im sad to say this, but my comp can literally not hold Minecraft in any form. If you have any suggestions, please put this down below. If not, then I am sadly quitting the server 'till 1.8. See ya'll then. :/
Scan your computer for viruses. Clean your computer for un-used files (anything you don't use any more, delete it!) Your computer should run a ton faster now!!
psst razer game booster works for me with fps + lag issues http://www.razerzone.com/au-en/cortex/game-booster the site might not change from australian to US though. if so just google it ^ w ^
Like Kash said, this sounds like a virus problem and an update to 1.8 will not fix it. If it was running fine before, then it most likely means virus, so GameBooster won't help here. How to clean for viruses: The thing is, most Antiviruses come with okay virus scanners, however, in my opinion, Malwarebytes gets rid of the worst. 1) Download Malwarebytes here -> https://www.malwarebytes.org/mwb-download/ 2) Run the downloaded file 3) Click "Yes" to the User Account Control window. 4) In the Setup window, press Ok. 5) Press Next 6) Tick "I Accept the Agreement" and click Next 7) Click Next again. 8) Click Next once again. 9) Click Next again. 10) Click Next again. 11) Click Install 12) When it is done installing, UNCHECK "ENABLE FREE TRIAL OF MALAWAREBYTES" 13) When Malawarebytes opens, click "Scan Now" in the bottom right corner of the window. 14) Leave your computer alone until the scan is completed. 15) I personally don't have any viruses so I'm not too sure what appears if you do, but it should be fairly straightforward.
Thanks guys. I cleared my entire pc, did Feven's idea of using the virus clearer (34 viruses ) so Im about to log on. *fingers crossed*
Also be sure to disable the virus scanner unless you do stuff in the internet or use funny software, because it slows your PC down when it's running.