I bought my first custom-built gaming PC about a month ago, with a Ryzen 7 9850X3D, RTX 5080, and 32 GB of RAM. Despite the high-end hardware, the system feels much slower than I expected. I'm not very experienced with PCs and would appreciate help figuring out what needs to be checked or optimized for better performance. The HDMI cable is connected directly to the graphics card, and Windows is set to my monitor's native resolution at 144 Hz. I can provide more details if needed, but I'm not sure whether the issue is low game FPS, slow startup, or general Windows performance.
4 Answers
Make sure the motherboard firmware and chipset drivers are installed, then verify that the memory is running at its rated speed with EXPO enabled in the BIOS. Also review Windows power settings and NVIDIA graphics settings. Avoid piling on third-party antivirus or cleanup utilities, and remove unfamiliar programs that may be running in the background. Don’t change too many settings at once, though—first establish whether the hardware is actually benchmarking below normal.
Run a hardware monitoring or benchmark tool and share the results. A full HWiNFO summary can show the CPU, GPU, memory configuration, storage, temperatures, and clock speeds. A benchmark such as 3DMark Steel Nomad can also indicate whether the system is performing normally. Check CPU and GPU temperatures while gaming, since overheating or throttling could explain poor performance.
Check the basics first: confirm the monitor cable is connected to the GPU, not the motherboard, and make sure Windows and the NVIDIA graphics drivers are current. Check whether the system drive is an NVMe or SATA SSD, how much free space remains, and whether Windows was freshly installed after the previous owner’s files and software were removed. An old hard drive, nearly full SSD, unwanted background software, or a non-clean installation could all make the PC feel slow.
It would help to clarify what “slow” means. Are games running at low FPS, does Windows take a long time to start, or do applications feel sluggish? Also provide the game, resolution, graphics settings, FPS, and frame-time information if the problem is gaming performance.
HDMI versus DisplayPort normally shouldn’t make the computer slower as long as the cable is connected to the graphics card and supports the desired resolution and refresh rate. DisplayPort is only worth trying if the current cable cannot handle those settings.