Two ports at once have been used for Samsung’s 5120x1440 240hz monitors. Each port refreshes half of the screen and there are two scanlines going from left to right. Using the calc here you might be able to use two DP2.1 UHBR80 cables with DSC and nonstandard timings to run 4k 1000hz 10bit.
Average wage in the US is a lot more than 45k. Sorry to hear about your financial situation, we don’t even try to make the economy work for most people.
“The national average salary in the U.S. in Q4 of 2023 was $59,384”