Experiencing high CPU usage while streaming a TV show and using Opera browser, including its helper apps, can occur due to various factors. Here are a few possible reasons and solutions to consider:

Hardware Limitations: If your device's hardware specifications are not sufficient to handle streaming high-quality video content or running resource-intensive applications, it can result in high CPU usage. Consider upgrading your hardware if possible or adjusting the video quality settings to reduce the load on your CPU.

Browser Extensions or Plugins: Certain browser extensions or plugins can consume significant CPU resources, especially those related to video playback or ad blocking. Try disabling or removing unnecessary extensions to see if it improves CPU usage.

Outdated Software: Ensure that your Opera browser, its helper apps, and your operating system are up to date. Software updates often include performance improvements and bug fixes that can help optimize CPU usage.

Background Processes or Tabs: Check if there are any other applications or browser tabs running in the background that might be using excessive CPU resources. Close any unnecessary programs or tabs to free up CPU capacity.

Video Streaming Settings: Some streaming platforms allow you to adjust video quality settings. Lowering the resolution or streaming bitrate can reduce the CPU load while still providing a satisfactory viewing experience. Look for video quality options within the streaming platform you're using.

Hardware Acceleration: In Opera browser settings, you can enable or disable hardware acceleration. Experiment with toggling this option to see if it has any impact on CPU usage while streaming.

Malware or Adware: Scan your system for malware or adware using reputable security software. These malicious programs can consume CPU resources and impact overall performance.