Hi there! I see you're experiencing slowness and crashing with the Tile Family app on your Mac running OS X 10.15.7. I'd like to help you get it running smoothly again.

To start, could you tell me a bit more about when the app slows down or crashes? For example:
- Does it happen right when you open it, or after some time using it?
- Are there specific actions or screens where it crashes?
- Have you noticed if your Mac slows down with other apps as well, or just Tile Family?

Meanwhile, here are some steps tailored for your MacOS version to try resolving common causes of app slowness and crashing:

1. Quit and Relaunch the App
- Quit the Tile Family app completely (press Command + Q or right-click its icon in the Dock and choose Quit).
- Then reopen it to see if the issue persists.

2. Restart Your Mac
- Sometimes background processes can affect app performance. A simple restart clears them up. Click the Apple menu (top-left) > Restart.

3. Update the App
- Make sure you have the latest version of Tile Family. Open the App Store, go to the Updates tab, and update the app if available.

4. Clear Cache/Data Related to Tile Family
- Although Macs don't have an easy "clear cache" button for individual apps like mobile devices, you can try:
- Open Finder, select "Go" > "Go to Folder" from the menu.
- Enter ~/Library/Caches/ and look for any folder related to Tile Family. If found, move it to Trash.
- You might also want to check ~/Library/Application Support/ for Tile Family files — moving those temporarily to see if it helps.
- Be cautious: Back up important app data before deleting if you can.

5. Check Activity Monitor
- Open Activity Monitor (Finder > Applications > Utilities).
- Look for Tile Family in the CPU or Memory tabs to see if it's using excessive resources.
- If yes, that could signal an app bug or resource leak. Restarting or reinstalling might help.

6. Reinstall the App
- Delete Tile Family from your Applications folder, empty Trash, then reinstall it from the App Store. This ensures clean installation.

If you've already tried any of these or if the crashes happen under certain conditions, please let me know. We can try some more advanced troubleshooting or check for known issues on your specific OS version.

Are you able to try these steps and tell me what happens?