Neuron wallet is a full node solution, meaning it runs a CKB node in the background that downloads the entire Nervos blockchain. Upon installation, it may take several hours (sometimes days) to catch up with the full history of the blockchain. After that, Neuron will continue to run a full CKB node in the background. If you close Neuron, the full node will shut down and stop syncing. Once you open Neuron again, the full node reconnects and starts syncing again from the last point where it left off. If it was previously fully synced, it should only take a few minutes to catch up, and if your wallet was shut off for a long time, it may take a little longer to catch up. The time it takes to sync depends on your internet connection & computer power. But once synced, Neuron will occupy significantly less of your computer power. Ultimately, this full node solution results in a superiorly secure wallet!
If your Neuron wallet is still not fully synced after an extended period of time or transactions continue to fail, feel free to consult the #support channel in our Discord for further assistance. You can also view and create issues on GitHub: https://github.com/nervosnetwork/neuron/issues. If you decide to open a new issue on GitHub, we recommend adding your debug information and providing further details about your computer specs and operating system. Additionally, it is recommended that you clear your cache (located in settings), make sure that VPNs are off and computer speed is not compromised, and try restarting the application and your system.