Use custom threshold for what's consider a low RAM device

core/src/main/java/eu/kanade/tachiyomi/util/system/DeviceUtil.kt

@@ -1,7 +1,10 @@
 package eu.kanade.tachiyomi.util.system
 
 import android.annotation.SuppressLint
+import android.app.ActivityManager
+import android.content.Context
 import android.os.Build
+import androidx.core.content.getSystemService
 import logcat.LogPriority
 import tachiyomi.core.util.system.logcat
 
@@ -65,6 +68,20 @@ object DeviceUtil {
         "com.zui.resolver",
     )
 
+    /**
+     * ActivityManager#isLowRamDevice is based on a system property, which isn't
+     * necessarily trustworthy. 1GB is supposedly the regular threshold.
+     *
+     * Instead, we consider anything with less than 3GB of RAM as low memory
+     * considering how heavy image processing can be.
+     */
+    fun isLowRamDevice(context: Context): Boolean {
+        val memInfo = ActivityManager.MemoryInfo()
+        context.getSystemService<ActivityManager>()!!.getMemoryInfo(memInfo)
+        val totalMemBytes = memInfo.totalMem
+        return totalMemBytes < 3L * 1024 * 1024 * 1024
+    }
+
     @SuppressLint("PrivateApi")
     private fun getSystemProperty(key: String?): String? {
         return try {