Before people jump in and tell me to search the web - Yes, I have done so many, many times and have tried every suggestions there are.
- What have you tried so far?
Because this sounds like the same issue tons of people post about on here, but before helping it might be an idea to advise what you have done to date so people aren't advising something you've already attempted.
And if its not the same issue they aren't wasting both yours and their time
- Also adding in the gpu/software version being used will be helpful