Have you ever encountered this situation: clearly operating smoothly on a DeFi protocol, but always facing transaction failures or slippage explosions? Many people immediately blame protocol instability, but the real issue might not be there at all.

Take a leading DeFi protocol as an example. It relies on a zero-latency matching engine and real-time WebSocket channels to obtain market depth data for ETH, BNB, and various Layer 2 networks. The design goal is simplicity and speed. However, within this sophisticated system, some elements are secretly causing disruptions—that is, the various plugins installed in your browser.

The most direct culprits are ad blockers and script filtering plugins. They seem to keep the interface clean, but in reality, these plugins can mistakenly block many normal RPC calls and front-end real-time pushes. As a result, the data the protocol needs gets blocked, and commands that should be executed are filtered out. Naturally, your transaction gets stuck.

Another category is so-called "wallet assistant" or "market push" plugins. They claim to help you monitor markets and trade quickly, but the problem is these plugins often inject their own code logic, which conflicts with the native front-end code of DeFi protocols. You think you're clicking the trade button, but the front-end code gets scrambled, parameters can't be passed correctly, and the transaction fails.

There's also a less obvious issue—some browser extensions change HTTP request headers or rewrite cookies. For DeFi interactions that require real-time authentication, this is a nightmare. Signature authentication fails, and contract calls get rejected.

The solution isn't complicated. First, when accessing such DeFi protocols, create a "clean" browser tab or a separate profile that only keeps the essential wallet plugins. Second, turn off ad blockers and script filters, or add the DeFi protocol's address to a trusted list. Third, regularly check the browser's Network tab to see if any requests are being blocked.

In short, the stability of DeFi transactions depends not only on the protocol and network but also heavily on your browser environment. Sometimes, the cause of failures is hidden in those seemingly harmless little tools you use.