Hi,
1. Are you facing this issue with only IGT Slots games or with all online games?
2. Is this the first time that you are trying to run the game?
3. Were you able to play this game earlier? If “Yes”, have you made any recent hardware or software changes to the computer prior to this issue?
4. What is the make and model of computer manufacturer?
Try the methods mentioned below and check after each method:
Method 1: If you are trying to play only “online slots games”, try the steps provided in the article below and check after each method:
Troubleshoot problems playing online games using Internet Explorer
Method 2:
Step 1: Run ‘Display Quality Troubleshooter’.
Step 2: If the issue persists, follow the steps provided in the article below and check:
Fixing game performance problems
Hope it helps.