Initial fix (#297)

src/Discord.Net.Rest/Net/Queue/RequestQueueBucket.cs

@@ -371,7 +371,7 @@ namespace Discord.Net.Queue
                 if (info.RetryAfter.HasValue)
                 {
                     //RetryAfter is more accurate than Reset, where available
-                    resetTick = DateTimeOffset.UtcNow.AddMilliseconds(info.RetryAfter.Value);
+                    resetTick = DateTimeOffset.UtcNow.AddSeconds(info.RetryAfter.Value);
 #if DEBUG_LIMITS
                     Debug.WriteLine($"[{id}] Retry-After: {info.RetryAfter.Value} ({info.RetryAfter.Value} ms)");
 #endif

src/Discord.Net.Rest/Net/RateLimitInfo.cs

@@ -51,7 +51,7 @@ namespace Discord.Net
             RetryAfter = headers.TryGetValue("Retry-After", out temp) &&
                 int.TryParse(temp, NumberStyles.None, CultureInfo.InvariantCulture, out var retryAfter) ? retryAfter : (int?)null;
 			ResetAfter = headers.TryGetValue("X-RateLimit-Reset-After", out temp) &&
-                double.TryParse(temp, NumberStyles.AllowDecimalPoint, CultureInfo.InvariantCulture, out var resetAfter) ? TimeSpan.FromMilliseconds((long)(resetAfter * 1000)) : (TimeSpan?)null;
+                double.TryParse(temp, NumberStyles.AllowDecimalPoint, CultureInfo.InvariantCulture, out var resetAfter) ? TimeSpan.FromSeconds(resetAfter) : (TimeSpan?)null;
             Bucket = headers.TryGetValue("X-RateLimit-Bucket", out temp) ? temp : null;
             Lag = headers.TryGetValue("Date", out temp) &&
                 DateTimeOffset.TryParse(temp, CultureInfo.InvariantCulture, DateTimeStyles.None, out var date) ? DateTimeOffset.UtcNow - date : (TimeSpan?)null;