Flickering Lines Across Screen

I’m a noob to flight simulators. I recently made a purchase of FSX as I wanted to purchase the Ikarus C42 plane add-on as I can’t fly whilst in lockdown. The game loads fine but whenever I enter a flight, there are continual flickering lines on the screen. I know this will be my hardware but is there a way to lower settings or my refresh rate so that this doesn’t happen? I am not too bothered how good the building look etc - just keen to have a play flight.

My hardware is:

- 8GB RAM

- Intel i5 4460T 1.90GHZ

- Intel HD graphics 4600 with a refresh rate of 59.9

I lowered all display settings to minimal and I used shift and Z and my FPS are around 15 but I still have some flickering lines.

Any suggestions? Is it simply a limitation of my hardware I’ll have to live with unless I upgrade?

Thanks

What type of filtering do you have selected in your settings. Probably seen on the FSX/Settings/ Customize/Graphics page?