Choose the symptom first
Start by separating a connection problem from a rendering problem. Latency is the time it takes to communicate with the server; frame time is the time needed to produce a frame. Watch the in-game performance graphs during a stutter. A latency spike points toward the connection, while a frame-time spike with steady latency points toward local performance. Both can happen together.
Note whether the problem occurs in every area, only during busy fights, or in one particular instance. For a crash, copy the exact error message. For a long loading screen, note whether the game eventually recovers. Change one setting at a time and repeat the same activity before deciding whether it helped.
For network issues, test the actual destination
A speed test measures the connection to its own server, which can take a different route from your game traffic. Test the affected Path of Exile instance instead. On Windows, enter that area, open the game installation folder, then open logs/Client.txt. Steam players can reach the installation folder through the game’s Manage menu by choosing Browse local files.
Near the end of Client.txt, find the latest line containing “Connecting to instance server at”. Copy the IP address before the colon, leaving out the port number. In WinMTR, a network diagnostic program for Windows, paste that address into Host and select Start. Keep playing while it collects roughly 300–500 packets, ideally during the problem, then select Stop and Copy Text to clipboard to save the result.
Interpret the connection test
Each row in WinMTR represents a step along the route. An intermediate router may ignore diagnostic packets: loss on that row alone does not prove game traffic is being dropped. Loss that continues through to the destination is more meaningful. Compare Ethernet with Wi-Fi to check whether the local wireless connection contributes.
When comparing gateways, select the other gateway at login and enter a fresh instance. Rejoining an existing instance can leave you testing the previous server. Capture the new instance address before repeating the trace, and compare similar gameplay conditions.
Check frame-time spikes and crashes separately
If frame time rises while latency stays steady, repeat a short stretch of gameplay with demanding background applications closed. Lower one graphics setting and repeat the same stretch. Record whether the stutter improves; a change in average frame rate alone does not tell you whether the pauses are fixed.
For crashes, record whether they occur at launch, when loading a specific area, or during a repeatable action. Keep the error text and your graphics card, driver and renderer details. If damaged installation files are a possibility, Steam’s Properties menu for the game has a Verify integrity of game files option under Installed Files. After verification, retry the same action before changing anything else.
Prepare a useful support report
If the problem persists, send a report to Grinding Gear Games, the developer of Path of Exile, through the official technical support forum. Include your platform, gateway, affected area, the steps that trigger the problem, when it happens, and the changes you tested. Say what each change did, even if it made no difference.
For connection problems, attach the saved trace and say whether it captured an episode of lag. For rendering problems or crashes, include hardware details, graphics settings and the exact error. Review any log excerpts for personal information before posting. A report such as “latency spikes in this area on Wi-Fi but stays steady over Ethernet” gives support a clearer starting point than “the game lags”.