# Weird black line bug and other issues **URL:** \ **Category:** Rendering\ **Tags:** unreal-engine, graphics-card, bug-report, editor, UE4-27, question\ **Created:** [March 6, 2022, 2:26am UTC](https://forums.unrealengine.com/t/weird-black-line-bug-and-other-issues/504385 "2022-03-06T02:26:28Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![Neil\_London](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/neil_london/32/1104110_2.png) [@Neil\_London](https://forums.unrealengine.com/u/Neil_London)\ **Post date:** [March 6, 2022, 2:26am UTC](https://forums.unrealengine.com/t/weird-black-line-bug-and-other-issues/504385/1 "2022-03-06T02:26:29Z")
I’ve been getting this weird bug of black lines that streak across the screen. I also have this other bug where after the engine has been open for about 30-60 minutes all the drop down windows stop working or just appear black. the tool tip flickers when hovering things as well. I’ve tried redownloading, I’ve tried, building but these problems don’t go away. running 4.27.2. PC specs: Ryzen 5 1400 Nvidia 1650 Super (30.0.14.7247) 3 monitor set up using an external usb device that allows for multiple monitors 1Tb SSD (main drive) 2X 2TB internal HDD Here is a photo of the black line issue. ![black lines](https://d3kjluh73b9h9o.cloudfront.net/original/4X/6/e/3/6e31f1694b60de035c148c1bcaf1059bb1f085bd.jpeg) ---
**Author:** ![ClockworkOcean](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/clockworkocean/32/1169999_2.png) [@ClockworkOcean](https://forums.unrealengine.com/u/ClockworkOcean)\ **Post date:** [March 6, 2022, 8:50am UTC](https://forums.unrealengine.com/t/weird-black-line-bug-and-other-issues/504385/2 "2022-03-06T08:50:23Z")
This is a GPU problem. Typical routes are: 1. Update GPU drivers 2. Downgrade GPU drivers to ‘studio’ VERSION. 3. Try the standard menu fixes, like: [https://nvidia.custhelp.com/app/answers/detail/a\_id/5157](https://nvidia.custhelp.com/app/answers/detail/a_id/5157) or turn off G-SYNC in the NVIDIA system settings ---
**Author:** ![Neil\_London](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/neil_london/32/1104110_2.png) [@Neil\_London](https://forums.unrealengine.com/u/Neil_London)\ **Post date:** [April 19, 2022, 11:24am UTC](https://forums.unrealengine.com/t/weird-black-line-bug-and-other-issues/504385/3 "2022-04-19T11:24:49Z")
Hey thanks for the quick replay and sorry for the slow response. This worked for me like a charm but I ended up buying to GFX card anyhow after UE5 launched. Just wanted to say thanks!